# Class MultiServerRestorer

OptimaJet.Workflow.Core.Runtime.ServiceRunners.MultiServerRestorer

Provides multi-server process restoring behavior by delegating restore execution to [RestorerBase](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.ServiceRunners/RestorerBase/).

Namespace: [OptimaJet.Workflow.Core.Runtime.ServiceRunners](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.ServiceRunners/)

```csharp
public class MultiServerRestorer : RestorerBase
```

## Type Hierarchy

-   [RestorerBase](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.ServiceRunners/RestorerBase/)
    -   MultiServerRestorer Current type

## Constructors

`public MultiServerRestorer(WorkflowRuntime runtimeOwner, CancellationToken token)` 

Initializes a new instance of the [MultiServerRestorer](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.ServiceRunners/MultiServerRestorer/) class.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `runtimeOwner` | `WorkflowRuntime` | Runtime owner whose process data and restorers are used during restore execution. |
| `token` | `CancellationToken` | Token that is observed when the returned restore action starts. |

## Methods

`public Func<Task> GetRestorerAsyncAction(Guid processId, string runtimeId, bool isSelfRestore, Guid runtimeLock)` 

Creates an asynchronous restore action for a single process in a multi-server runtime.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `processId` | `Guid` | Identifier of the process instance to restore. |
| `runtimeId` | `String` | Identifier of the runtime currently participating in restore coordination. |
| `isSelfRestore` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) when the runtime being restored is the current runtime instance; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) when restoring on behalf of another runtime. |
| `runtimeLock` | `Guid` | Expected lock value used to detect stale runtime ownership. |

### Returns

| Type | Description |
| --- | --- |
| `Func<Task>` | A delegate that performs the restore action when invoked. |

### Remarks

The returned delegate executes restore logic from [RestorerBase](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.ServiceRunners/RestorerBase/) and validates the runtime lock for multi-server coordination before applying decisions.

[Previous IWorkflowServiceRunner](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.ServiceRunners/IWorkflowServiceRunner/) [Next MultiServerServiceRunner](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.ServiceRunners/MultiServerServiceRunner/)